This distinctive pharmacy, located between the walls of the convent of San Giovanni, probably opened in 1201, although the current furnishings of the historic shop date from a later time. Three rooms hold shelves filled in the 16th-17th Centuries with small and large vases, flasks, jugs and tankards: the Sala del Fuoco (fire room) has a delivery desk with scales; the Sala dei Mortai (mortar room), frescoed with lunettes showing figures of Hippocrates, Galeno and Avicenna; and the Sala delle Sirene (sirens room), which holds a collection of documents.